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1 /* |
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2 * Copyright (c) 2003, 2004 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Exif v2.2 file format reader/parser API implementation |
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15 * |
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16 */ |
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17 |
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18 |
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19 // INCLUDE FILES |
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20 #include "ExifReadImpl.h" |
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21 #include "ExifCore.h" |
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22 #include "ExifEndian.h" |
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23 #include "ExifCommon.h" |
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24 #include "ExifTagImpl.h" |
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25 |
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26 // ============================ CLASS CExifRead ================================ |
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27 // ============================ MEMBER FUNCTIONS =============================== |
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28 |
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29 // ----------------------------------------------------------------------------- |
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30 // CExifRead::NewL |
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31 // Two-phased constructor. |
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32 // ----------------------------------------------------------------------------- |
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33 // |
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34 EXPORT_C CExifRead* CExifRead::NewL( const TDesC8& aExifData ) |
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35 { |
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36 return CExifReadImpl::NewL( aExifData, EFalse, CExifRead::ENoOptions ); |
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37 } |
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38 |
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39 EXPORT_C CExifRead* CExifRead::NewL( const TDesC8& aExifData, TUint aExifReadOption ) |
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40 { |
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41 return CExifReadImpl::NewL( aExifData, EFalse, aExifReadOption ); |
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42 } |
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43 |
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44 // Destructor |
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45 CExifRead::~CExifRead() |
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46 { |
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47 } |
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48 |
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49 |
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50 // ============================ CLASS CExifReadImpl ============================ |
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51 // ============================ MEMBER FUNCTIONS =============================== |
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52 |
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53 // ----------------------------------------------------------------------------- |
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54 // CExifReadImpl::CExifReadImpl |
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55 // C++ default constructor can NOT contain any code, that |
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56 // might leave. |
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57 // ----------------------------------------------------------------------------- |
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58 // |
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59 CExifReadImpl::CExifReadImpl() |
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60 { |
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61 } |
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62 |
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63 // ----------------------------------------------------------------------------- |
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64 // CExifReadImpl::ConstructL |
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65 // Symbian 2nd phase constructor can leave. |
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66 // ----------------------------------------------------------------------------- |
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67 // |
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68 void CExifReadImpl::ConstructL( const TDesC8& aExifData, TBool aCreate, TUint aExifReadOption ) |
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69 { |
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70 LOGTEXT3( _L( "ExifLib: CExifReadImpl::ConstructL() entering: aCreate=%x, aExifReadOption=0x%x" ), aCreate, aExifReadOption ); |
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71 iExifReadOption = aExifReadOption; |
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72 iExifCore = CExifCore::NewL(); |
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73 iReader = CExifEndianBase::NewBaseL( aExifData.Ptr(), aExifData.Length(), |
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74 !aCreate ); |
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75 |
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76 if ( aCreate ) |
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77 { |
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78 ParseJpegDataL(); |
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79 } |
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80 else |
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81 { |
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82 ParseExifFormatL(); |
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83 if ( !(iExifReadOption & CExifRead::ENoTagChecking ) && |
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84 !iExifCore->IsValid() ) |
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85 { |
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86 LOGTEXT( _L( "ExifLib: CExifReadImpl::ConstructL() Leaving KErrNotSupported" )); |
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87 User::Leave( KErrNotSupported ); |
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88 } |
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89 } |
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90 LOGTEXT( _L( "ExifLib: CExifReadImpl::ConstructL() returning" )); |
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91 } |
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92 |
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93 // ----------------------------------------------------------------------------- |
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94 // CExifReadImpl::ConstructL |
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95 // Symbian 2nd phase constructor can leave. |
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96 // ----------------------------------------------------------------------------- |
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97 // |
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98 void CExifReadImpl::ConstructL() |
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99 { |
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100 iExifReadOption = CExifRead::ENoOptions; |
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101 iExifCore = CExifCore::NewL(); |
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102 } |
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103 |
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104 // ----------------------------------------------------------------------------- |
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105 // CExifReadImpl::NewL |
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106 // Two-phased constructor. |
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107 // ----------------------------------------------------------------------------- |
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108 // |
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109 CExifReadImpl* CExifReadImpl::NewL( const TDesC8& aExifData, TBool aCreate, TUint aExifReadOption ) |
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110 { |
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111 CExifReadImpl* self = new( ELeave ) CExifReadImpl(); |
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112 CleanupStack::PushL( self ); |
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113 self->ConstructL( aExifData, aCreate, aExifReadOption ); |
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114 CleanupStack::Pop(); |
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115 return self; |
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116 } |
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117 |
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118 // ----------------------------------------------------------------------------- |
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119 // CExifReadImpl::NewL |
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120 // Two-phased constructor. |
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121 // ----------------------------------------------------------------------------- |
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122 // |
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123 CExifReadImpl* CExifReadImpl::NewL() |
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124 { |
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125 CExifReadImpl* self = new( ELeave ) CExifReadImpl(); |
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126 CleanupStack::PushL( self ); |
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127 self->ConstructL(); |
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128 CleanupStack::Pop(); |
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129 return self; |
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130 } |
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131 |
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132 // Destructor |
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133 CExifReadImpl::~CExifReadImpl() |
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134 { |
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135 LOGTEXT( _L( "ExifLib: CExifReadImpl::~CExifReadImpl() entering" ) ); |
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136 if ( iExifCore ) |
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137 { |
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138 delete iExifCore; |
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139 } |
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140 if ( iReader ) |
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141 { |
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142 delete iReader; |
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143 } |
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144 LOGTEXT( _L( "ExifLib: CExifReadImpl::~CExifReadImpl() returning" ) ); |
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145 } |
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146 |
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147 // ----------------------------------------------------------------------------- |
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148 // CExifReadImpl::GetTagL |
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149 // Returns the Tag instance that has the specified tag ID from the requested IFD |
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150 // ----------------------------------------------------------------------------- |
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151 // |
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152 const CExifTag* CExifReadImpl::GetTagL( |
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153 const TExifIfdType aIfdType, |
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154 const TUint16 aTagId ) const |
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155 { |
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156 if ( !iExifCore ) |
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157 { |
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158 User::Leave( KErrGeneral ); |
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159 } |
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160 |
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161 if ( !TExifCommon::IsValidTagId( aTagId ) ) |
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162 { |
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163 LOGTEXT( _L( "ExifLib: CExifReadImpl::GetTagL Leave( KErrNotSupported )" ) ); |
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164 User::Leave( KErrNotSupported ); |
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165 } |
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166 return iExifCore->GetTagL( aIfdType, aTagId ); |
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167 } |
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168 |
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169 // ----------------------------------------------------------------------------- |
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170 // CExifReadImpl::GetTagIdsL |
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171 // Returns the IDs of all the tags that are stored in the Exif data. |
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172 // ----------------------------------------------------------------------------- |
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173 // |
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174 TUint16* CExifReadImpl::GetTagIdsL( |
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175 const TExifIfdType aIfdType, |
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176 TInt& aNoTags ) const |
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177 { |
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178 if ( !iExifCore ) |
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179 { |
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180 LOGTEXT( _L( "ExifLib: CExifReadImpl::GetTagIdsL Leave( KErrGeneral )" ) ); |
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181 User::Leave( KErrGeneral ); |
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182 } |
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183 |
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184 return iExifCore->GetTagIdsL( aIfdType, aNoTags ); |
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185 } |
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186 |
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187 // ----------------------------------------------------------------------------- |
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188 // CExifReadImpl::GetIfdTypesL |
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189 // Returns the types of the IFDs stored in the Exif data. |
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190 // ----------------------------------------------------------------------------- |
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191 // |
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192 TExifIfdType* CExifReadImpl::GetIfdTypesL( TInt& aNoIfd ) const |
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193 { |
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194 if ( !iExifCore ) |
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195 { |
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196 LOGTEXT( _L( "ExifLib: CExifReadImpl::GetIfdTypesL Leave( KErrGeneral )" ) ); |
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197 User::Leave( KErrGeneral ); |
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198 } |
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199 |
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200 return iExifCore->GetIfdTypesL( aNoIfd ); |
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201 } |
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202 |
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203 // ----------------------------------------------------------------------------- |
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204 // CExifReadImpl::GetThumbnailL |
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205 // Returns pointer to a copy of the thumbnail image data. |
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206 // ----------------------------------------------------------------------------- |
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207 // |
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208 HBufC8* CExifReadImpl::GetThumbnailL() const |
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209 { |
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210 if ( !iExifCore ) |
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211 { |
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212 LOGTEXT( _L( "ExifLib: CExifReadImpl::GetThumbnailL Leave( KErrGeneral )" ) ); |
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213 User::Leave( KErrGeneral ); |
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214 } |
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215 |
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216 return iExifCore->GetThumbnailL(); |
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217 } |
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218 |
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219 // ----------------------------------------------------------------------------- |
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220 // CExifReadImpl::IfdExists |
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221 // Returns a boolean stating if the queried IFD structure exists in Exif data |
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222 // ----------------------------------------------------------------------------- |
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223 // |
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224 TBool CExifReadImpl::IfdExists( const TExifIfdType aIfdType ) const |
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225 { |
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226 if ( !iExifCore ) |
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227 { |
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228 LOGTEXT( _L( "ExifLib: CExifReadImpl::IfdExists return EFalse" ) ); |
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229 return EFalse; |
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230 } |
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231 |
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232 return iExifCore->IfdExists( aIfdType ); |
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233 } |
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234 |
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235 // ----------------------------------------------------------------------------- |
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236 // CExifReadImpl::TagExists |
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237 // Returns a boolean stating if the queried tag exists in the specified IFD |
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238 // structure |
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239 // ----------------------------------------------------------------------------- |
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240 // |
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241 TBool CExifReadImpl::TagExists( |
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242 const TUint16 aTagId, |
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243 const TExifIfdType aIfdType ) const |
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244 { |
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245 if ( !iExifCore ) |
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246 { |
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247 LOGTEXT( _L( "ExifLib: CExifReadImpl::TagExists return EFalse" ) ); |
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248 return EFalse; |
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249 } |
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250 |
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251 return iExifCore->TagExists( aTagId, aIfdType ); |
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252 } |
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253 |
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254 // ----------------------------------------------------------------------------- |
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255 // CExifReadImpl::ParseExifFormatL |
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256 // Parses the IFD data according to the specified IFD type. |
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257 // ----------------------------------------------------------------------------- |
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258 // |
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259 void CExifReadImpl::ParseExifFormatL() |
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260 { |
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261 LOGTEXT( _L( "ExifLib: CExifReadImpl::ParseExifFormatL() entering" ) ); |
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262 if ( ( !iExifCore ) || ( !iReader ) ) |
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263 { |
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264 LOGTEXT( _L( "ExifLib: CExifReadImpl::ParseExifFormatL() Leaving KErrGeneral" ) ); |
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265 User::Leave( KErrGeneral ); |
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266 } |
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267 |
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268 TUint32 ifd1Offset = 0; |
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269 ParseIfdL( EIfd0, ifd1Offset ); |
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270 |
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271 TUint32 ifdExifOffset = 0; |
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272 User::LeaveIfError( iExifCore->GetTagData( KIdExifIfdPointer, |
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273 ifdExifOffset ) ); |
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274 |
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275 User::LeaveIfError( iReader->MoveTo( ifdExifOffset ) ); |
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276 |
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277 TUint32 nextIfdOffset = 0; |
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278 ParseIfdL( EIfdExif, nextIfdOffset ); |
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279 |
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280 TUint32 ifdGpsOffset = 0 ; |
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281 if ( !iExifCore->GetTagData( KIdGpsIfdPointer, ifdGpsOffset ) ) |
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282 { |
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283 User::LeaveIfError( iReader->MoveTo( ifdGpsOffset ) ); |
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284 iExifCore->CreateIfdL( EIfdGps ); |
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285 nextIfdOffset = 0; |
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286 ParseIfdL( EIfdGps, nextIfdOffset ); |
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287 } |
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288 |
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289 TUint32 ifdIntOpOffset = 0; |
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290 if ( !iExifCore->GetTagData( KIdIntOpIfdPointer, ifdIntOpOffset ) ) |
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291 { |
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292 User::LeaveIfError( iReader->MoveTo( ifdIntOpOffset ) ); |
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293 iExifCore->CreateIfdL( EIfdIntOp ); |
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294 nextIfdOffset = 0; |
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295 ParseIfdL( EIfdIntOp, nextIfdOffset ); |
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296 } |
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297 |
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298 if ( ifd1Offset ) |
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299 { |
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300 User::LeaveIfError( iReader->MoveTo( ifd1Offset ) ); |
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301 TRAPD( error, ParseIfdL( EIfd1, nextIfdOffset ) ); |
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302 if ( error == KErrNotSupported ) |
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303 { |
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304 iExifCore->DeleteIfd( EIfd1 ); |
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305 } |
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306 else if ( error == KErrCorrupt && ( iExifReadOption & CExifRead::ENoTagChecking ) ) |
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307 { |
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308 iExifCore->DeleteIfd( EIfd1 ); |
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309 } |
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310 else |
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311 { |
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312 LOGTEXT2( _L( "ExifLib: CExifReadImpl::ParseExifFormatL() ParseIfdL error=%d" ), error ); |
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313 User::LeaveIfError( error ); |
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314 } |
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315 } |
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316 |
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317 // Parse jpeg data only if it is read to buffer |
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318 if ( !(iExifReadOption & (CExifRead::ENoJpeg)) ) |
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319 { |
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320 ParseJpegDataL(); |
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321 } |
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322 LOGTEXT( _L( "ExifLib: CExifReadImpl::ParseExifFormatL() returning" ) ); |
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323 } |
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324 |
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325 // ----------------------------------------------------------------------------- |
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326 // CExifReadImpl::ParseIfdL |
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327 // Parses the Jpeg primary image data and initializes the Jpeg primary image |
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328 // structures. |
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329 // ----------------------------------------------------------------------------- |
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330 // |
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331 void CExifReadImpl::ParseIfdL( |
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332 const TExifIfdType aIfdType, |
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333 TUint32& aNextIfdOffset ) |
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334 { |
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335 LOGTEXT3( _L( "ExifLib: CExifReadImpl::ParseIfdL() entering: aIfdType=0x%x, aNextIfdOffset=0x%x" ), aIfdType, aNextIfdOffset ); |
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336 if ( ( !iExifCore ) || ( !iReader ) ) |
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337 { |
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338 LOGTEXT( _L( "ExifLib: CExifReadImpl::ParseIfdL() Leaving KErrGeneral" ) ); |
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339 User::Leave( KErrGeneral ); |
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340 } |
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341 |
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342 TUint16 noTagsInIfd = 0; |
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343 User::LeaveIfError( iReader->ReadUInt16( noTagsInIfd ) ); |
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344 if ( !noTagsInIfd ) |
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345 { |
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346 LOGTEXT( _L( "ExifLib: CExifReadImpl::ParseIfdL() Leaving KErrNotSupported" ) ); |
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347 User::Leave( KErrNotSupported ); |
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348 } |
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349 // Read and create each tag one by one |
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350 TUint32 tagsEndOffset = 0; |
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351 for ( TUint16 i = 0; i < noTagsInIfd; ++i ) |
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352 { |
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353 TUint16 tagId = 0; |
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354 TUint16 tagType = 0; |
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355 TUint32 tagCount = 0; |
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356 User::LeaveIfError( ReadTagHeader( tagId, tagType, tagCount ) ); |
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357 TUint noBytes = 0; |
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358 if ( ( tagType == CExifTag::ETagByte ) || |
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359 ( tagType == CExifTag::ETagAscii ) || |
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360 ( tagType == CExifTag::ETagUndefined ) ) |
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361 { |
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362 noBytes = sizeof( TUint8 ); |
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363 } |
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364 else if ( ( tagType == CExifTag::ETagLong ) || |
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365 ( tagType == CExifTag::ETagSlong ) ) |
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366 { |
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367 noBytes = sizeof( TUint32 ); |
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368 } |
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369 else if ( ( tagType == CExifTag::ETagRational ) || |
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370 ( tagType == CExifTag::ETagSrational ) ) |
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371 { |
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372 noBytes = 2 * sizeof( TUint32 ); |
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373 } |
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374 else if ( tagType == CExifTag::ETagShort ) |
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375 { |
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376 noBytes = sizeof( TUint16 ); |
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377 } |
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378 else |
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379 { |
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380 LOGTEXT( _L( "ExifLib: CExifReadImpl::ParseIfdL() Leaving KErrCorrupt" ) ); |
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381 User::Leave( KErrCorrupt ); |
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382 } |
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383 LOGTEXT2( _L( "ExifLib: CExifReadImpl::ParseIfdL() noBytes=%d" ), noBytes ); |
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384 |
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385 if ( tagCount > KMaxApp1Size ) |
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386 { |
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387 LOGTEXT( _L( "ExifLib: CExifReadImpl::ParseIfdL() Leaving KErrCorrupt (>KMaxApp1Size)" ) ); |
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388 User::Leave( KErrCorrupt ); |
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389 } |
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390 LOGTEXT2( _L( "ExifLib: CExifReadImpl::ParseIfdL() tagCount=%d" ), tagCount ); |
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391 |
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392 if ( !tagCount ) |
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393 { |
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394 if ( noBytes > 4) |
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395 { |
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396 LOGTEXT( _L( "ExifLib: CExifReadImpl::ParseIfdL() Leaving KErrCorrupt (noBytes > 4)" ) ); |
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397 User::Leave( KErrCorrupt ); |
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398 } |
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399 tagCount = 4 / noBytes; |
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400 } |
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401 noBytes *= tagCount; |
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402 HBufC8* valueBuffer = HBufC8::NewL( noBytes ); |
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403 CleanupStack::PushL( valueBuffer ); |
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404 |
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405 // If real tag data size is smaller than 4 bytes, the data is at the |
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406 // current position. Otherwise 4-byte pointer to the real data location |
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407 // is kept. The pointer is at current location. |
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408 LOGTEXT2( _L( "ExifLib: CExifReadImpl::ParseIfdL() noBytes=%d" ), noBytes ); |
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409 if ( noBytes < 5 ) |
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410 { |
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411 iReader->CopyBuffer( tagCount, |
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412 STATIC_CAST( TUint8, ( noBytes / tagCount ) ), valueBuffer ); |
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413 // Skip remaining bytes. |
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414 if ( 4 - noBytes ) |
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415 { |
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416 LOGTEXT2( _L( "ExifLib: CExifReadImpl::ParseIfdL() skipping=%d" ), 4 - noBytes ); |
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417 iReader->Skip( 4 - noBytes ); |
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418 } |
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419 } |
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420 else |
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421 { |
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422 TUint32 valueOffset = 0; |
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423 User::LeaveIfError( iReader->ReadUInt32( valueOffset ) ); |
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424 LOGTEXT2( _L( "ExifLib: CExifReadImpl::ParseIfdL() valueOffset=%d" ), valueOffset ); |
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425 User::LeaveIfError( iReader->CopyBuffer( valueOffset, tagCount, |
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426 STATIC_CAST( TUint8, ( noBytes / tagCount ) ), valueBuffer ) ); |
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427 LOGTEXT2( _L( "ExifLib: CExifReadImpl::ParseIfdL() tagCount=%d" ), tagsEndOffset ); |
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428 if ( tagsEndOffset < ( valueOffset + noBytes ) ) |
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429 { |
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430 tagsEndOffset = valueOffset + noBytes; |
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431 } |
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432 } |
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433 |
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434 // |
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435 // Test if unknown tags should just be skipped and delete |
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436 // |
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437 LOGTEXT2( _L( "ExifLib: CExifReadImpl::ParseIfdL() iExifReadOption=%x" ), iExifReadOption ); |
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438 if ( !(iExifReadOption & CExifRead::ENoTagChecking ) && !TExifCommon::IsValidTagId( tagId ) ) |
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439 { |
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440 LOGTEXT2( _L( "ExifLib: CExifReadImpl::ParseIfdL() skipping tagId=%x" ), tagId ); |
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441 CleanupStack::PopAndDestroy( valueBuffer ); |
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442 } |
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443 else // Tag was known |
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444 { |
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445 LOGTEXT2( _L( "ExifLib: CExifReadImpl::ParseIfdL() create new tagId=%x" ), tagId ); |
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446 CExifTagImpl* tag = NULL; |
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447 if ( iExifReadOption & CExifRead::ENoTagChecking ) |
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448 { |
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449 tag = CExifTagImpl::NewL( tagId, |
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450 STATIC_CAST( CExifTag::TExifTagDataType, tagType ), |
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451 tagCount, valueBuffer, EFalse ); |
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452 } |
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453 else |
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454 { |
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455 tag = CExifTagImpl::NewL( tagId, |
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456 STATIC_CAST( CExifTag::TExifTagDataType, tagType ), |
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457 tagCount, valueBuffer, ETrue ); |
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458 } |
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459 CleanupStack::Pop( valueBuffer ); |
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460 CleanupStack::PushL( tag ); |
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461 |
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462 // Ignore case when valid tag is in wrong IFD and ENoTagChecking is set |
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463 if ( !iExifCore->TagIsValid( tag->TagInfo(), aIfdType ) ) |
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464 { |
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465 if ( iExifReadOption & CExifRead::ENoTagChecking ) |
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466 { |
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467 LOGTEXT3( _L( "ExifLib: CExifReadImpl::ParseIfdL() keep tagId=0x%x in wrong aIfdType=0x%x" ), tagId, aIfdType ); |
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468 iExifCore->InsertTagL( aIfdType, tag, EFalse ); |
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469 CleanupStack::Pop( tag ); |
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470 } |
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471 else |
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472 { |
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473 LOGTEXT3( _L( "ExifLib: CExifReadImpl::ParseIfdL() skipping tagId=0x%x in wrong aIfdType=0x%x" ), tagId, aIfdType ); |
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474 CleanupStack::PopAndDestroy( tag ); |
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475 } |
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476 } |
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477 else // Tag is in correct IFD |
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478 { |
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479 if ( iExifReadOption & CExifRead::ENoTagChecking ) |
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480 { |
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481 iExifCore->InsertTagL( aIfdType, tag, EFalse ); |
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482 } |
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483 else |
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484 { |
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485 iExifCore->InsertTagL( aIfdType, tag, ETrue ); |
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486 } |
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487 CleanupStack::Pop( tag ); |
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488 } |
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489 } |
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490 |
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491 } |
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492 User::LeaveIfError( iReader->ReadUInt32( aNextIfdOffset ) ); |
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493 if ( tagsEndOffset ) |
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494 { |
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495 User::LeaveIfError( iReader->MoveTo( tagsEndOffset ) ); |
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496 } |
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497 if ( aIfdType == EIfd1 ) |
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498 { |
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499 ParseThumbnailL(); |
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500 } |
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501 LOGTEXT( _L( "ExifLib: CExifReadImpl::ParseIfdL() returning" ) ); |
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502 } |
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503 |
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504 // ----------------------------------------------------------------------------- |
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505 // CExifReadImpl::ParseJpegDataL |
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506 // Parses the Jpeg primary image data and initializes the Jpeg primary image |
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507 // structures. |
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508 // ----------------------------------------------------------------------------- |
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509 // |
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510 void CExifReadImpl::ParseJpegDataL() |
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511 { |
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512 LOGTEXT( _L( "ExifLib: CExifReadImpl::ParseIfdL() entering" ) ); |
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513 if ( ( !iExifCore ) || ( !iReader ) ) |
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514 { |
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515 LOGTEXT( _L( "ExifLib: CExifReadImpl::ParseIfdL() Leave( KErrGeneral )" ) ); |
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516 User::Leave( KErrGeneral ); |
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517 } |
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518 |
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519 TUint32 jpgStartOffset = 0; |
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520 TUint32 jpgStartOffset2 = 0; |
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521 TUint32 jpgEndOffset = 0; |
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522 TUint32 jpgEndOffset2 = 0; |
|
523 TUint32 jpgSofOffset = 0; |
|
524 |
|
525 // 1. Find the last 2 EOI markers. |
|
526 if ( iReader->LocateJpegMarkerFromEnd( KEoi, jpgEndOffset ) ) |
|
527 { |
|
528 LOGTEXT( _L( "ExifLib: CExifReadImpl::ParseIfdL() Leave( KErrCorrupt )LocateJpegMarkerFromEnd" ) ); |
|
529 User::Leave( KErrCorrupt ); |
|
530 } |
|
531 |
|
532 if ( iExifReadOption & CExifRead::EFastJpegParsing ) |
|
533 { |
|
534 // Read current position after exif header parsing |
|
535 iReader->CurrentPosOffset(jpgStartOffset); |
|
536 |
|
537 // add start offset by 2 if exif header was not in image |
|
538 // SOI is in 0 position |
|
539 if ( !jpgStartOffset && jpgEndOffset ) |
|
540 { |
|
541 jpgStartOffset += 2; |
|
542 } |
|
543 } |
|
544 else |
|
545 { // Scan the whole jpeg image data |
|
546 |
|
547 iReader->LocateJpegMarkerFromEnd( KEoi, jpgEndOffset2, 0, jpgEndOffset ); |
|
548 |
|
549 // Assumption: There might be additional redundant EOI markers after the |
|
550 // real EOI. Difference between two EOI marker is assumed to be 150 bytes. |
|
551 while( jpgEndOffset - jpgEndOffset2 < 150 ) |
|
552 { |
|
553 jpgEndOffset = jpgEndOffset2; |
|
554 jpgEndOffset2 = 0; |
|
555 iReader->LocateJpegMarkerFromEnd( |
|
556 KEoi, jpgEndOffset2, 0, jpgEndOffset ); |
|
557 } |
|
558 |
|
559 // 2. Find the SOF0 marker between the EOI markers. |
|
560 if ( iReader->LocateJpegMarker( |
|
561 KSof0, jpgSofOffset, jpgEndOffset2, jpgEndOffset ) ) |
|
562 { |
|
563 LOGTEXT( _L( "ExifLib: CExifReadImpl::ParseIfdL() Leave( KErrNotSupported )LocateJpegMarker" ) ); |
|
564 User::Leave( KErrNotSupported ); |
|
565 } |
|
566 |
|
567 jpgStartOffset = jpgSofOffset; |
|
568 |
|
569 if ( (jpgStartOffset >= jpgEndOffset ) || |
|
570 ( jpgStartOffset < jpgEndOffset2 ) ) |
|
571 { |
|
572 LOGTEXT( _L( "ExifLib: CExifReadImpl::ParseIfdL() Leave( KErrNotSupported )jpgStartOffset" ) ); |
|
573 User::Leave( KErrNotSupported ); |
|
574 } |
|
575 |
|
576 // 3. Find other Jpeg markers between the 2nd last EOI and the last |
|
577 // SOF0 marker. |
|
578 if ( iReader->LocateJpegMarker( |
|
579 KDqt, jpgStartOffset2, jpgEndOffset2, jpgStartOffset ) == KErrNone) |
|
580 { |
|
581 if ( jpgStartOffset2 < jpgStartOffset ) |
|
582 { |
|
583 jpgStartOffset = jpgStartOffset2; |
|
584 } |
|
585 } |
|
586 |
|
587 if ( iReader->LocateJpegMarker( |
|
588 KDht, jpgStartOffset2, jpgEndOffset2, jpgStartOffset ) == KErrNone) |
|
589 { |
|
590 if ( jpgStartOffset2 < jpgStartOffset ) |
|
591 { |
|
592 jpgStartOffset = jpgStartOffset2; |
|
593 } |
|
594 } |
|
595 |
|
596 if ( iReader->LocateJpegMarker( |
|
597 KDri, jpgStartOffset2, jpgEndOffset2, jpgStartOffset ) == KErrNone) |
|
598 { |
|
599 if ( jpgStartOffset2 < jpgStartOffset ) |
|
600 { |
|
601 jpgStartOffset = jpgStartOffset2; |
|
602 } |
|
603 } |
|
604 } |
|
605 // Should include the EOI marker. |
|
606 jpgEndOffset += 2; |
|
607 |
|
608 iExifCore->SetJpgOffsets( jpgStartOffset, jpgEndOffset ); |
|
609 LOGTEXT( _L( "ExifLib: CExifReadImpl::ParseIfdL() returning" ) ); |
|
610 } |
|
611 |
|
612 // ----------------------------------------------------------------------------- |
|
613 // CExifReadImpl::ParseThumbnailL |
|
614 // Parses the Jpeg thumbnail image data and initializes the Jpeg thumbnail |
|
615 // structures. |
|
616 // ----------------------------------------------------------------------------- |
|
617 // |
|
618 void CExifReadImpl::ParseThumbnailL() |
|
619 { |
|
620 LOGTEXT( _L( "ExifLib: CExifReadImpl::ParseThumbnailL() entering" ) ); |
|
621 if ( ( !iExifCore ) || ( !iReader ) ) |
|
622 { |
|
623 LOGTEXT( _L( "ExifLib: CExifReadImpl::ParseThumbnailL() Leave( KErrGeneral )" ) ); |
|
624 User::Leave( KErrGeneral ); |
|
625 } |
|
626 |
|
627 TUint32 thumbnailStart = 0; |
|
628 if ( iExifCore->GetThumbnailTagData( KIdJpegInterchangeFormat, |
|
629 thumbnailStart ) ) |
|
630 { |
|
631 LOGTEXT( _L( "ExifLib: CExifReadImpl::ParseThumbnailL() Leave( KErrCorrupt )GetThumbnailTagData1" ) ); |
|
632 User::Leave( KErrCorrupt ); |
|
633 } |
|
634 TUint32 thumbnailSize = 0; |
|
635 if ( iExifCore->GetThumbnailTagData( KIdJpegInterchangeFormatLength, |
|
636 thumbnailSize ) ) |
|
637 { |
|
638 LOGTEXT( _L( "ExifLib: CExifReadImpl::ParseThumbnailL() Leave( KErrCorrupt )GetThumbnailTagData2" ) ); |
|
639 User::Leave( KErrCorrupt ); |
|
640 } |
|
641 |
|
642 LOGTEXT3( _L( "ExifLib: CExifReadImpl::ParseThumbnailL() thumbnailStart=%d, thumbnailSize=%d" ), thumbnailStart, thumbnailSize ); |
|
643 if ( thumbnailSize > KMaxApp1Size ) |
|
644 { |
|
645 LOGTEXT( _L( "ExifLib: CExifReadImpl::ParseThumbnailL() Leave( KErrCorrupt ) thumbnailSize > KMaxApp1Size" ) ); |
|
646 User::Leave( KErrCorrupt ); |
|
647 } |
|
648 |
|
649 iReader->MoveTo( thumbnailStart ); |
|
650 HBufC8* buffer = HBufC8::NewLC( thumbnailSize ); |
|
651 iReader->CopyBuffer( thumbnailSize, 1, buffer ); |
|
652 iExifCore->InsertThumbnailL( buffer ); |
|
653 CleanupStack::Pop(); |
|
654 LOGTEXT( _L( "ExifLib: CExifReadImpl::ParseThumbnailL() returning" ) ); |
|
655 } |
|
656 |
|
657 // ----------------------------------------------------------------------------- |
|
658 // CExifReadImpl::ReadTagHeader |
|
659 // Reads the tag header, and returns the header information in the parameters. |
|
660 // ----------------------------------------------------------------------------- |
|
661 // |
|
662 TInt CExifReadImpl::ReadTagHeader( |
|
663 TUint16& aTagId, |
|
664 TUint16& aTagType, |
|
665 TUint32& aTagCount ) const |
|
666 { |
|
667 LOGTEXT4( _L( "ExifLib: CExifReadImpl::ReadTagHeader() entering: aTagId=0x%x, aTagType=0x%x, aTagCount=0x%x" ), aTagId, aTagType, aTagCount ); |
|
668 if ( !iReader ) |
|
669 { |
|
670 LOGTEXT( _L( "ExifLib: CExifReadImpl::ReadTagHeader() returning KErrGeneral" ) ); |
|
671 return KErrGeneral; |
|
672 } |
|
673 |
|
674 TInt error = iReader->ReadUInt16( aTagId ); |
|
675 if ( error ) |
|
676 { |
|
677 LOGTEXT2( _L( "ExifLib: CExifReadImpl::ReadTagHeader() returning aTagId error=%d" ),error ); |
|
678 return error; |
|
679 } |
|
680 error = iReader->ReadUInt16( aTagType ); |
|
681 if ( error ) |
|
682 { |
|
683 LOGTEXT2( _L( "ExifLib: CExifReadImpl::ReadTagHeader() returning aTagType error=%d" ),error ); |
|
684 return error; |
|
685 } |
|
686 error = iReader->ReadUInt32( aTagCount ); |
|
687 if ( error ) |
|
688 { |
|
689 LOGTEXT2( _L( "ExifLib: CExifReadImpl::ReadTagHeader() returning aTagCount error=%d" ),error ); |
|
690 return error; |
|
691 } |
|
692 LOGTEXT( _L( "ExifLib: CExifReadImpl::ReadTagHeader() returning" ) ); |
|
693 return KErrNone; |
|
694 } |
|
695 |
|
696 // ----------------------------------------------------------------------------- |
|
697 // CExifReadImpl::GetImageDescriptionL |
|
698 // Gets the Image Description tag data. |
|
699 // ----------------------------------------------------------------------------- |
|
700 // |
|
701 HBufC8* CExifReadImpl::GetImageDescriptionL() const |
|
702 { |
|
703 if ( !iExifCore ) |
|
704 { |
|
705 User::Leave( KErrGeneral ); |
|
706 } |
|
707 |
|
708 return iExifCore->GetTagDataL( KIdImageDescription ); |
|
709 } |
|
710 |
|
711 // ----------------------------------------------------------------------------- |
|
712 // CExifReadImpl::GetMakeL |
|
713 // Gets the Make tag data. |
|
714 // ----------------------------------------------------------------------------- |
|
715 // |
|
716 HBufC8* CExifReadImpl::GetMakeL() const |
|
717 { |
|
718 if ( !iExifCore ) |
|
719 { |
|
720 User::Leave( KErrGeneral ); |
|
721 } |
|
722 |
|
723 return iExifCore->GetTagDataL( KIdMake ); |
|
724 } |
|
725 |
|
726 // ----------------------------------------------------------------------------- |
|
727 // CExifReadImpl::GetModelL |
|
728 // Gets the Model tag data. |
|
729 // ----------------------------------------------------------------------------- |
|
730 // |
|
731 HBufC8* CExifReadImpl::GetModelL() const |
|
732 { |
|
733 if ( !iExifCore ) |
|
734 { |
|
735 User::Leave( KErrGeneral ); |
|
736 } |
|
737 |
|
738 return iExifCore->GetTagDataL( KIdModel ); |
|
739 } |
|
740 |
|
741 // ----------------------------------------------------------------------------- |
|
742 // CExifReadImpl::GetOrientation |
|
743 // Gets the Orientation tag data. |
|
744 // ----------------------------------------------------------------------------- |
|
745 // |
|
746 TInt CExifReadImpl::GetOrientation( TUint16& aOrientation ) const |
|
747 { |
|
748 if ( !iExifCore ) |
|
749 { |
|
750 return KErrGeneral; |
|
751 } |
|
752 |
|
753 return iExifCore->GetTagData( KIdOrientation, aOrientation ); |
|
754 } |
|
755 |
|
756 // ----------------------------------------------------------------------------- |
|
757 // CExifReadImpl::GetXResolution |
|
758 // Gets the X Resolution tag data. |
|
759 // ----------------------------------------------------------------------------- |
|
760 // |
|
761 TInt CExifReadImpl::GetXResolution( |
|
762 TUint32& aXResolutionNumerator, |
|
763 TUint32& aXResolutionDenumerator ) const |
|
764 { |
|
765 if ( !iExifCore ) |
|
766 { |
|
767 return KErrGeneral; |
|
768 } |
|
769 |
|
770 return iExifCore->GetTagData( KIdXResolution, |
|
771 aXResolutionNumerator, aXResolutionDenumerator ); |
|
772 } |
|
773 |
|
774 // ----------------------------------------------------------------------------- |
|
775 // CExifReadImpl::GetYResolution |
|
776 // Gets the Y Resolution tag data. |
|
777 // ----------------------------------------------------------------------------- |
|
778 // |
|
779 TInt CExifReadImpl::GetYResolution( |
|
780 TUint32& aYResolutionNumerator, |
|
781 TUint32& aYResolutionDenumerator ) const |
|
782 { |
|
783 if ( !iExifCore ) |
|
784 { |
|
785 return KErrGeneral; |
|
786 } |
|
787 |
|
788 return iExifCore->GetTagData( KIdYResolution, |
|
789 aYResolutionNumerator, aYResolutionDenumerator ); |
|
790 } |
|
791 |
|
792 // ----------------------------------------------------------------------------- |
|
793 // CExifReadImpl::GetResolutionUnit |
|
794 // Gets the Resolution Unit tag data. |
|
795 // ----------------------------------------------------------------------------- |
|
796 // |
|
797 TInt CExifReadImpl::GetResolutionUnit( TUint16& aResolutionUnit ) const |
|
798 { |
|
799 if ( !iExifCore ) |
|
800 { |
|
801 return KErrGeneral; |
|
802 } |
|
803 |
|
804 return iExifCore->GetTagData( KIdResolutionUnit, aResolutionUnit ); |
|
805 } |
|
806 |
|
807 // ----------------------------------------------------------------------------- |
|
808 // CExifReadImpl::GetTransferFunctionL |
|
809 // Gets the Transfer Function tag data. |
|
810 // ----------------------------------------------------------------------------- |
|
811 // |
|
812 HBufC8* CExifReadImpl::GetTransferFunctionL() const |
|
813 { |
|
814 if ( !iExifCore ) |
|
815 { |
|
816 User::Leave( KErrGeneral ); |
|
817 } |
|
818 |
|
819 return iExifCore->GetTagDataL( KIdTransferFunction ); |
|
820 } |
|
821 |
|
822 // ----------------------------------------------------------------------------- |
|
823 // CExifReadImpl::GetDateTimeL |
|
824 // Gets the Date Time tag data. |
|
825 // ----------------------------------------------------------------------------- |
|
826 // |
|
827 HBufC8* CExifReadImpl::GetDateTimeL() const |
|
828 { |
|
829 if ( !iExifCore ) |
|
830 { |
|
831 User::Leave( KErrGeneral ); |
|
832 } |
|
833 |
|
834 return iExifCore->GetTagDataL( KIdDateTime ); |
|
835 } |
|
836 |
|
837 // ----------------------------------------------------------------------------- |
|
838 // CExifReadImpl::GetYCbCrPositioning |
|
839 // Gets the YCbCr Positioning tag data. |
|
840 // ----------------------------------------------------------------------------- |
|
841 // |
|
842 TInt CExifReadImpl::GetYCbCrPositioning( TUint16& aYCbCrPositioning ) const |
|
843 { |
|
844 if ( !iExifCore ) |
|
845 { |
|
846 return KErrGeneral; |
|
847 } |
|
848 |
|
849 return iExifCore->GetTagData( KIdYCbCrPositioning, aYCbCrPositioning ); |
|
850 } |
|
851 |
|
852 // ----------------------------------------------------------------------------- |
|
853 // CExifReadImpl::GetSoftwareL |
|
854 // Gets the Software tag data. |
|
855 // ----------------------------------------------------------------------------- |
|
856 // |
|
857 HBufC8* CExifReadImpl::GetSoftwareL() const |
|
858 { |
|
859 if ( !iExifCore ) |
|
860 { |
|
861 User::Leave( KErrGeneral ); |
|
862 } |
|
863 |
|
864 return iExifCore->GetTagDataL( KIdSoftware ); |
|
865 } |
|
866 |
|
867 // ----------------------------------------------------------------------------- |
|
868 // CExifReadImpl::GetCopyrightL |
|
869 // Gets the Copyright tag data. |
|
870 // ----------------------------------------------------------------------------- |
|
871 // |
|
872 HBufC8* CExifReadImpl::GetCopyrightL() const |
|
873 { |
|
874 if ( !iExifCore ) |
|
875 { |
|
876 User::Leave( KErrGeneral ); |
|
877 } |
|
878 |
|
879 return iExifCore->GetTagDataL( KIdCopyright ); |
|
880 } |
|
881 |
|
882 // ----------------------------------------------------------------------------- |
|
883 // CExifReadImpl::GetExifIfdPointer |
|
884 // Gets the Exif Ifd Pointer tag data. |
|
885 // ----------------------------------------------------------------------------- |
|
886 // |
|
887 TInt CExifReadImpl::GetExifIfdPointer( TUint32& aExifIfdPointer ) const |
|
888 { |
|
889 if ( !iExifCore ) |
|
890 { |
|
891 return KErrGeneral; |
|
892 } |
|
893 |
|
894 return iExifCore->GetTagData( KIdExifIfdPointer, aExifIfdPointer ); |
|
895 } |
|
896 |
|
897 // ----------------------------------------------------------------------------- |
|
898 // CExifReadImpl::GetGpsInfoIfdPointer |
|
899 // Gets the Gps Ifd Pointer tag data. |
|
900 // ----------------------------------------------------------------------------- |
|
901 // |
|
902 TInt CExifReadImpl::GetGpsInfoIfdPointer( TUint32& aGpsInfoIfdPointer ) const |
|
903 { |
|
904 if ( !iExifCore ) |
|
905 { |
|
906 return KErrGeneral; |
|
907 } |
|
908 |
|
909 return iExifCore->GetTagData( KIdGpsIfdPointer, aGpsInfoIfdPointer ); |
|
910 } |
|
911 |
|
912 // ----------------------------------------------------------------------------- |
|
913 // CExifReadImpl::GetExposureTime |
|
914 // Gets the Exposure Time tag data. |
|
915 // ----------------------------------------------------------------------------- |
|
916 // |
|
917 TInt CExifReadImpl::GetExposureTime( |
|
918 TUint32& aExposureTime1, |
|
919 TUint32& aExposureTime2 ) const |
|
920 { |
|
921 if ( !iExifCore ) |
|
922 { |
|
923 return KErrGeneral; |
|
924 } |
|
925 |
|
926 return iExifCore->GetTagData( KIdExposureTime, |
|
927 aExposureTime1, aExposureTime2 ); |
|
928 } |
|
929 |
|
930 // ----------------------------------------------------------------------------- |
|
931 // CExifReadImpl::GetComponentsConfiguration |
|
932 // Gets the Components Configuration tag data. |
|
933 // ----------------------------------------------------------------------------- |
|
934 // |
|
935 TInt CExifReadImpl::GetComponentsConfiguration( |
|
936 TUint8& aFirstComponent, TUint8& aSecondComponent, |
|
937 TUint8& aThirdComponent, TUint8& aFourthComponent) const |
|
938 { |
|
939 if ( !iExifCore ) |
|
940 { |
|
941 return KErrGeneral; |
|
942 } |
|
943 |
|
944 TUint32 componentsConfiguration = 0; |
|
945 |
|
946 TInt error = iExifCore->GetTagData( KIdComponentsConfiguration, |
|
947 componentsConfiguration ); |
|
948 if ( error ) |
|
949 { |
|
950 return error; |
|
951 } |
|
952 aFirstComponent = STATIC_CAST ( TUint8, |
|
953 ( KOneByteMask & componentsConfiguration ) ); |
|
954 aSecondComponent = STATIC_CAST ( TUint8, |
|
955 ( KOneByteMask & ( componentsConfiguration >> 8 ) ) ); |
|
956 aThirdComponent = STATIC_CAST ( TUint8, |
|
957 ( KOneByteMask & ( componentsConfiguration >> 16 ) ) ); |
|
958 aFourthComponent = STATIC_CAST ( TUint8, |
|
959 ( KOneByteMask & ( componentsConfiguration >> 24 ) ) ); |
|
960 return KErrNone; |
|
961 } |
|
962 |
|
963 // ----------------------------------------------------------------------------- |
|
964 // CExifReadImpl::GetFlash |
|
965 // Gets the Flash tag data. |
|
966 // ----------------------------------------------------------------------------- |
|
967 // |
|
968 TInt CExifReadImpl::GetFlash( TUint16& aFlash ) const |
|
969 { |
|
970 if ( !iExifCore ) |
|
971 { |
|
972 return KErrGeneral; |
|
973 } |
|
974 |
|
975 return iExifCore->GetTagData( KIdFlash, aFlash ); |
|
976 } |
|
977 |
|
978 // ----------------------------------------------------------------------------- |
|
979 // CExifReadImpl::GetColorSpace |
|
980 // Gets the Color Space tag data. |
|
981 // ----------------------------------------------------------------------------- |
|
982 // |
|
983 TInt CExifReadImpl::GetColorSpace( TUint16& aColorSpace ) const |
|
984 { |
|
985 if ( !iExifCore ) |
|
986 { |
|
987 return KErrGeneral; |
|
988 } |
|
989 |
|
990 return iExifCore->GetTagData( KIdColorSpace, aColorSpace ); |
|
991 } |
|
992 |
|
993 // ----------------------------------------------------------------------------- |
|
994 // CExifReadImpl::GetPixelXDimension |
|
995 // Gets the Pixel X Dimension tag data. |
|
996 // ----------------------------------------------------------------------------- |
|
997 // |
|
998 TInt CExifReadImpl::GetPixelXDimension( TUint32& aPixelXDimension ) const |
|
999 { |
|
1000 if ( !iExifCore ) |
|
1001 { |
|
1002 return KErrGeneral; |
|
1003 } |
|
1004 |
|
1005 return iExifCore->GetTagData( KIdPixelXDimension, aPixelXDimension ); |
|
1006 } |
|
1007 |
|
1008 // ----------------------------------------------------------------------------- |
|
1009 // CExifReadImpl::GetPixelYDimension |
|
1010 // Gets the Pixel Y Dimension tag data. |
|
1011 // ----------------------------------------------------------------------------- |
|
1012 // |
|
1013 TInt CExifReadImpl::GetPixelYDimension( TUint32& aPixelYDimension ) const |
|
1014 { |
|
1015 if ( !iExifCore ) |
|
1016 { |
|
1017 return KErrGeneral; |
|
1018 } |
|
1019 |
|
1020 return iExifCore->GetTagData( KIdPixelYDimension, aPixelYDimension ); |
|
1021 } |
|
1022 |
|
1023 // ----------------------------------------------------------------------------- |
|
1024 // CExifReadImpl::GetExposureMode |
|
1025 // Gets the Exposure Mode tag data. |
|
1026 // ----------------------------------------------------------------------------- |
|
1027 // |
|
1028 TInt CExifReadImpl::GetExposureMode( TUint16& aExposureMode ) const |
|
1029 { |
|
1030 if ( !iExifCore ) |
|
1031 { |
|
1032 return KErrGeneral; |
|
1033 } |
|
1034 |
|
1035 return iExifCore->GetTagData( KIdExposureMode, aExposureMode ); |
|
1036 } |
|
1037 |
|
1038 // ----------------------------------------------------------------------------- |
|
1039 // CExifReadImpl::GetWhiteBalance |
|
1040 // Gets the White Balance tag data. |
|
1041 // ----------------------------------------------------------------------------- |
|
1042 // |
|
1043 TInt CExifReadImpl::GetWhiteBalance( TUint16& aWhiteBalance ) const |
|
1044 { |
|
1045 if ( !iExifCore ) |
|
1046 { |
|
1047 return KErrGeneral; |
|
1048 } |
|
1049 |
|
1050 return iExifCore->GetTagData( KIdWhiteBalance, aWhiteBalance ); |
|
1051 } |
|
1052 |
|
1053 // ----------------------------------------------------------------------------- |
|
1054 // CExifReadImpl::GetSceneCaptureType |
|
1055 // Gets the Scene Capture Type tag data. |
|
1056 // ----------------------------------------------------------------------------- |
|
1057 // |
|
1058 TInt CExifReadImpl::GetSceneCaptureType( TUint16& aSceneCaptureType ) const |
|
1059 { |
|
1060 if ( !iExifCore ) |
|
1061 { |
|
1062 return KErrGeneral; |
|
1063 } |
|
1064 |
|
1065 return iExifCore->GetTagData( KIdSceneCaptureType, aSceneCaptureType ); |
|
1066 } |
|
1067 |
|
1068 // ----------------------------------------------------------------------------- |
|
1069 // CExifReadImpl::GetExposureProgram |
|
1070 // Gets the Exposure Program tag data. |
|
1071 // ----------------------------------------------------------------------------- |
|
1072 // |
|
1073 TInt CExifReadImpl::GetExposureProgram( TUint16& aExposureProgram ) const |
|
1074 { |
|
1075 if ( !iExifCore ) |
|
1076 { |
|
1077 return KErrGeneral; |
|
1078 } |
|
1079 |
|
1080 return iExifCore->GetTagData( KIdExposureProgram, aExposureProgram ); |
|
1081 } |
|
1082 |
|
1083 // ----------------------------------------------------------------------------- |
|
1084 // CExifReadImpl::GetIsoSpeedRatingsL |
|
1085 // Gets the Iso Speed Ratings tag data. |
|
1086 // ----------------------------------------------------------------------------- |
|
1087 // |
|
1088 HBufC8* CExifReadImpl::GetIsoSpeedRatingsL() const |
|
1089 { |
|
1090 if ( !iExifCore ) |
|
1091 { |
|
1092 User::Leave( KErrGeneral ); |
|
1093 } |
|
1094 |
|
1095 return iExifCore->GetTagDataL( KIdIsoSpeedRatings ); |
|
1096 } |
|
1097 |
|
1098 // ----------------------------------------------------------------------------- |
|
1099 // CExifReadImpl::GetDateTimeOriginalL |
|
1100 // Gets the Date Time Original tag data. |
|
1101 // ----------------------------------------------------------------------------- |
|
1102 // |
|
1103 HBufC8* CExifReadImpl::GetDateTimeOriginalL() const |
|
1104 { |
|
1105 if ( !iExifCore ) |
|
1106 { |
|
1107 User::Leave( KErrGeneral ); |
|
1108 } |
|
1109 |
|
1110 return iExifCore->GetTagDataL( KIdDateTimeOriginal ); |
|
1111 } |
|
1112 |
|
1113 // ----------------------------------------------------------------------------- |
|
1114 // CExifReadImpl::GetDateTimeDigitizedL |
|
1115 // Gets the Date Time Digitized tag data. |
|
1116 // ----------------------------------------------------------------------------- |
|
1117 // |
|
1118 HBufC8* CExifReadImpl::GetDateTimeDigitizedL() const |
|
1119 { |
|
1120 if ( !iExifCore ) |
|
1121 { |
|
1122 User::Leave( KErrGeneral ); |
|
1123 } |
|
1124 |
|
1125 return iExifCore->GetTagDataL( KIdDateTimeDigitized ); |
|
1126 } |
|
1127 |
|
1128 // ----------------------------------------------------------------------------- |
|
1129 // CExifReadImpl::GetApertureValue |
|
1130 // Gets the Aperture Value tag data. |
|
1131 // ----------------------------------------------------------------------------- |
|
1132 // |
|
1133 TInt CExifReadImpl::GetApertureValue( |
|
1134 TUint32& aApertureValue1, |
|
1135 TUint32& aApertureValue2 ) const |
|
1136 { |
|
1137 if ( !iExifCore ) |
|
1138 { |
|
1139 return KErrGeneral; |
|
1140 } |
|
1141 |
|
1142 return iExifCore->GetTagData( KIdApertureValue, |
|
1143 aApertureValue1, aApertureValue2 ); |
|
1144 } |
|
1145 |
|
1146 // ----------------------------------------------------------------------------- |
|
1147 // CExifReadImpl::GetExposureBiasValue |
|
1148 // Gets the Exposure Bias Value tag data. |
|
1149 // ----------------------------------------------------------------------------- |
|
1150 // |
|
1151 TInt CExifReadImpl::GetExposureBiasValue( |
|
1152 TInt32& aExposureBiasValue1, |
|
1153 TInt32& aExposureBiasValue2 ) const |
|
1154 { |
|
1155 if ( !iExifCore ) |
|
1156 { |
|
1157 return KErrGeneral; |
|
1158 } |
|
1159 |
|
1160 return iExifCore->GetTagData( KIdExposureBiasValue, |
|
1161 aExposureBiasValue1, aExposureBiasValue2 ); |
|
1162 } |
|
1163 |
|
1164 // ----------------------------------------------------------------------------- |
|
1165 // CExifReadImpl::GetMeteringMode |
|
1166 // Gets the Metering Mode tag data. |
|
1167 // ----------------------------------------------------------------------------- |
|
1168 // |
|
1169 TInt CExifReadImpl::GetMeteringMode( TUint16& aMeteringMode ) const |
|
1170 { |
|
1171 if ( !iExifCore ) |
|
1172 { |
|
1173 return KErrGeneral; |
|
1174 } |
|
1175 |
|
1176 return iExifCore->GetTagData( KIdMeteringMode, aMeteringMode ); |
|
1177 } |
|
1178 |
|
1179 // ----------------------------------------------------------------------------- |
|
1180 // CExifReadImpl::GetLightSource |
|
1181 // Gets the Light Source tag data. |
|
1182 // ----------------------------------------------------------------------------- |
|
1183 // |
|
1184 TInt CExifReadImpl::GetLightSource( TUint16& aLightSource ) const |
|
1185 { |
|
1186 if ( !iExifCore ) |
|
1187 { |
|
1188 return KErrGeneral; |
|
1189 } |
|
1190 |
|
1191 return iExifCore->GetTagData( KIdLightSource, aLightSource ); |
|
1192 } |
|
1193 |
|
1194 // ----------------------------------------------------------------------------- |
|
1195 // CExifReadImpl::GetMakerNoteL |
|
1196 // Gets the Maker Note tag data. |
|
1197 // ----------------------------------------------------------------------------- |
|
1198 // |
|
1199 HBufC8* CExifReadImpl::GetMakerNoteL() const |
|
1200 { |
|
1201 if ( !iExifCore ) |
|
1202 { |
|
1203 User::Leave( KErrGeneral ); |
|
1204 } |
|
1205 |
|
1206 return iExifCore->GetTagDataL( KIdMakerNote ); |
|
1207 } |
|
1208 |
|
1209 // ----------------------------------------------------------------------------- |
|
1210 // CExifReadImpl::GetUserCommentL |
|
1211 // Gets the User Comment tag data. |
|
1212 // ----------------------------------------------------------------------------- |
|
1213 // |
|
1214 HBufC8* CExifReadImpl::GetUserCommentL() const |
|
1215 { |
|
1216 if ( !iExifCore ) |
|
1217 { |
|
1218 User::Leave( KErrGeneral ); |
|
1219 } |
|
1220 |
|
1221 return iExifCore->GetTagDataL( KIdUserComment ); |
|
1222 } |
|
1223 |
|
1224 // ----------------------------------------------------------------------------- |
|
1225 // CExifReadImpl::GetRelatedSoundFileL |
|
1226 // Gets the Related Sound File tag data. |
|
1227 // ----------------------------------------------------------------------------- |
|
1228 // |
|
1229 HBufC8* CExifReadImpl::GetRelatedSoundFileL() const |
|
1230 |
|
1231 { |
|
1232 if ( !iExifCore ) |
|
1233 { |
|
1234 User::Leave( KErrGeneral ); |
|
1235 } |
|
1236 |
|
1237 return iExifCore->GetTagDataL( KIdRelatedSoundFile ); |
|
1238 } |
|
1239 |
|
1240 // ----------------------------------------------------------------------------- |
|
1241 // CExifReadImpl::GetFileSource |
|
1242 // Gets the File Source tag data. |
|
1243 // ----------------------------------------------------------------------------- |
|
1244 // |
|
1245 TInt CExifReadImpl::GetFileSource( TInt8& aFileSource ) const |
|
1246 { |
|
1247 if ( !iExifCore ) |
|
1248 { |
|
1249 return KErrGeneral; |
|
1250 } |
|
1251 |
|
1252 return iExifCore->GetTagData( KIdFileSource, aFileSource ); |
|
1253 } |
|
1254 |
|
1255 // ----------------------------------------------------------------------------- |
|
1256 // CExifReadImpl::GetDigitalZoomRatio |
|
1257 // Gets the Digital Zoom Ratio tag data. |
|
1258 // ----------------------------------------------------------------------------- |
|
1259 // |
|
1260 TInt CExifReadImpl::GetDigitalZoomRatio( |
|
1261 TUint32& aDigitalZoomRatio1, |
|
1262 TUint32& aDigitalZoomRatio2 ) const |
|
1263 { |
|
1264 if ( !iExifCore ) |
|
1265 { |
|
1266 return KErrGeneral; |
|
1267 } |
|
1268 |
|
1269 return iExifCore->GetTagData( KIdDigitalZoomRatio, |
|
1270 aDigitalZoomRatio1, aDigitalZoomRatio2 ); |
|
1271 } |
|
1272 |
|
1273 // ----------------------------------------------------------------------------- |
|
1274 // CExifReadImpl::GetContrast |
|
1275 // Gets the Contrast tag data. |
|
1276 // ----------------------------------------------------------------------------- |
|
1277 // |
|
1278 TInt CExifReadImpl::GetContrast( TUint16& aContrast ) const |
|
1279 { |
|
1280 if ( !iExifCore ) |
|
1281 { |
|
1282 return KErrGeneral; |
|
1283 } |
|
1284 |
|
1285 return iExifCore->GetTagData( KIdContrast, aContrast ); |
|
1286 } |
|
1287 |
|
1288 // ----------------------------------------------------------------------------- |
|
1289 // CExifReadImpl::GetSaturation |
|
1290 // Gets the Saturation tag data. |
|
1291 // ----------------------------------------------------------------------------- |
|
1292 // |
|
1293 TInt CExifReadImpl::GetSaturation( TUint16& aSaturation ) const |
|
1294 { |
|
1295 if ( !iExifCore ) |
|
1296 { |
|
1297 return KErrGeneral; |
|
1298 } |
|
1299 |
|
1300 return iExifCore->GetTagData( KIdSaturation, aSaturation ); |
|
1301 } |
|
1302 |
|
1303 // ----------------------------------------------------------------------------- |
|
1304 // CExifReadImpl::GetSharpness |
|
1305 // Gets the Sharpness tag data. |
|
1306 // ----------------------------------------------------------------------------- |
|
1307 // |
|
1308 TInt CExifReadImpl::GetSharpness( TUint16& aSharpness ) const |
|
1309 { |
|
1310 if ( !iExifCore ) |
|
1311 { |
|
1312 return KErrGeneral; |
|
1313 } |
|
1314 |
|
1315 return iExifCore->GetTagData( KIdSharpness, aSharpness ); |
|
1316 } |
|
1317 |
|
1318 // ----------------------------------------------------------------------------- |
|
1319 // CExifReadImpl::GetExifVersion |
|
1320 // Gets the Exif Version tag data. |
|
1321 // ----------------------------------------------------------------------------- |
|
1322 // |
|
1323 TInt CExifReadImpl::GetExifVersion( TUint32& aExifVersion ) const |
|
1324 { |
|
1325 if ( !iExifCore ) |
|
1326 { |
|
1327 return KErrGeneral; |
|
1328 } |
|
1329 |
|
1330 return iExifCore->GetTagData( KIdExifVersion, aExifVersion ); |
|
1331 } |
|
1332 |
|
1333 // ----------------------------------------------------------------------------- |
|
1334 // CExifReadImpl::GetFlashPixVersion |
|
1335 // Gets the Flash Pix Version tag data. |
|
1336 // ----------------------------------------------------------------------------- |
|
1337 // |
|
1338 TInt CExifReadImpl::GetFlashPixVersion( TUint32& aFlashPixVersion ) const |
|
1339 { |
|
1340 if ( !iExifCore ) |
|
1341 { |
|
1342 return KErrGeneral; |
|
1343 } |
|
1344 |
|
1345 return iExifCore->GetTagData( KIdFlashPixVersion, aFlashPixVersion ); |
|
1346 } |
|
1347 |
|
1348 // ----------------------------------------------------------------------------- |
|
1349 // CExifReadImpl::GetInteroperabilityIfdPointer |
|
1350 // Gets the Interoperability Ifd Pointer tag data. |
|
1351 // ----------------------------------------------------------------------------- |
|
1352 // |
|
1353 TInt CExifReadImpl::GetInteroperabilityIfdPointer( |
|
1354 TUint32& aInteroperabilityIfdPointer ) const |
|
1355 { |
|
1356 if ( !iExifCore ) |
|
1357 { |
|
1358 return KErrGeneral; |
|
1359 } |
|
1360 |
|
1361 return iExifCore->GetTagData( KIdIntOpIfdPointer, |
|
1362 aInteroperabilityIfdPointer ); |
|
1363 } |
|
1364 |
|
1365 // ----------------------------------------------------------------------------- |
|
1366 // CExifReadImpl::GetThumbnailXResolution |
|
1367 // Gets the X Resolution tag data of thumbnail. |
|
1368 // ----------------------------------------------------------------------------- |
|
1369 // |
|
1370 TInt CExifReadImpl::GetThumbnailXResolution( |
|
1371 TUint32& aXResolution1, |
|
1372 TUint32& aXResolution2 ) const |
|
1373 { |
|
1374 if ( !iExifCore ) |
|
1375 { |
|
1376 return KErrGeneral; |
|
1377 } |
|
1378 |
|
1379 return iExifCore->GetThumbnailTagData( KIdXResolution, |
|
1380 aXResolution1, aXResolution2 ); |
|
1381 } |
|
1382 |
|
1383 // ----------------------------------------------------------------------------- |
|
1384 // CExifReadImpl::GetThumbnailYResolution |
|
1385 // Gets the Y Resolution tag data of thumbnail. |
|
1386 // ----------------------------------------------------------------------------- |
|
1387 // |
|
1388 TInt CExifReadImpl::GetThumbnailYResolution( |
|
1389 TUint32& aYResolution1, |
|
1390 TUint32& aYResolution2 ) const |
|
1391 { |
|
1392 if ( !iExifCore ) |
|
1393 { |
|
1394 return KErrGeneral; |
|
1395 } |
|
1396 |
|
1397 return iExifCore->GetThumbnailTagData( KIdYResolution, |
|
1398 aYResolution1, |
|
1399 aYResolution2 ); |
|
1400 } |
|
1401 |
|
1402 // ----------------------------------------------------------------------------- |
|
1403 // CExifReadImpl::GetThumbnailResolutionUnit |
|
1404 // Gets the ResolutionUnit tag data of thumbnail. |
|
1405 // ----------------------------------------------------------------------------- |
|
1406 // |
|
1407 TInt CExifReadImpl::GetThumbnailResolutionUnit( TUint16& aResolutionUnit ) const |
|
1408 { |
|
1409 if ( !iExifCore ) |
|
1410 { |
|
1411 return KErrGeneral; |
|
1412 } |
|
1413 |
|
1414 return iExifCore->GetThumbnailTagData( KIdResolutionUnit, aResolutionUnit ); |
|
1415 } |
|
1416 |
|
1417 // ----------------------------------------------------------------------------- |
|
1418 // CExifReadImpl::GetThumbnailCompression |
|
1419 // Gets the Compression tag data of thumbnail. |
|
1420 // ----------------------------------------------------------------------------- |
|
1421 // |
|
1422 TInt CExifReadImpl::GetThumbnailCompression( TUint16& aCompression ) const |
|
1423 { |
|
1424 if ( !iExifCore ) |
|
1425 { |
|
1426 return KErrGeneral; |
|
1427 } |
|
1428 |
|
1429 return iExifCore->GetThumbnailTagData( KIdCompression, aCompression ); |
|
1430 } |
|
1431 |
|
1432 // ----------------------------------------------------------------------------- |
|
1433 // CExifReadImpl::GetJpegInterchangeFormat |
|
1434 // Gets the Jpeg Interchange Format of thumbnail. |
|
1435 // ----------------------------------------------------------------------------- |
|
1436 // |
|
1437 TInt CExifReadImpl::GetJpegInterchangeFormat( |
|
1438 TUint32& aJpegInterchangeFormat ) const |
|
1439 { |
|
1440 if ( !iExifCore ) |
|
1441 { |
|
1442 return KErrGeneral; |
|
1443 } |
|
1444 |
|
1445 return iExifCore->GetThumbnailTagData( KIdJpegInterchangeFormat, |
|
1446 aJpegInterchangeFormat ); |
|
1447 } |
|
1448 |
|
1449 // ----------------------------------------------------------------------------- |
|
1450 // CExifReadImpl::GetJpegInterchangeFormatLength |
|
1451 // Gets the Jpeg Interchange Format Length of thumbnail. |
|
1452 // ----------------------------------------------------------------------------- |
|
1453 // |
|
1454 TInt CExifReadImpl::GetJpegInterchangeFormatLength( |
|
1455 TUint32& aJpegInterchangeFormatLength ) const |
|
1456 { |
|
1457 if ( !iExifCore ) |
|
1458 { |
|
1459 return KErrGeneral; |
|
1460 } |
|
1461 |
|
1462 return iExifCore->GetThumbnailTagData( KIdJpegInterchangeFormatLength, |
|
1463 aJpegInterchangeFormatLength ); |
|
1464 } |
|
1465 |
|
1466 // ----------------------------------------------------------------------------- |
|
1467 // CExifReadImpl::GetExifAppSegmentL |
|
1468 // Returns a copy of whole Exif APP1 segment in a descriptor. |
|
1469 // ----------------------------------------------------------------------------- |
|
1470 HBufC8* CExifReadImpl::GetExifAppSegmentL() const |
|
1471 { |
|
1472 if ( !iExifCore ) |
|
1473 { |
|
1474 User::Leave( KErrGeneral ); |
|
1475 } |
|
1476 |
|
1477 User::LeaveIfError( iExifCore->Finalize() ); |
|
1478 |
|
1479 if ( !iExifCore->IsValid() ) |
|
1480 { |
|
1481 User::Leave( KErrNotReady ); |
|
1482 } |
|
1483 |
|
1484 TUint size = iExifCore->App1Size(); |
|
1485 size+=2; |
|
1486 // Allocation amount is even for 2-byte alignment |
|
1487 HBufC8* exifData = HBufC8::NewLC( size + ( size % 2 ) ); |
|
1488 exifData->Des().SetLength( size + ( size % 2 ) ); |
|
1489 TUint pos = 0; |
|
1490 iExifCore->WriteExifDataL( exifData, pos ); |
|
1491 exifData->Des().SetLength( size ); |
|
1492 CleanupStack::Pop( exifData ); |
|
1493 return exifData; |
|
1494 } |
|
1495 |
|
1496 // ----------------------------------------------------------------------------- |
|
1497 // CExifReadImpl::GetShutterSpeedValue |
|
1498 // Gets the Shutter Speed Value tag data. |
|
1499 // ----------------------------------------------------------------------------- |
|
1500 // |
|
1501 TInt CExifReadImpl::GetShutterSpeedValue( |
|
1502 TInt32& aShutterSpeedValue1, |
|
1503 TInt32& aShutterSpeedValue2 ) const |
|
1504 { |
|
1505 if ( !iExifCore ) |
|
1506 { |
|
1507 return KErrGeneral; |
|
1508 } |
|
1509 |
|
1510 return iExifCore->GetTagData( KIdShutterSpeedValue, aShutterSpeedValue1, |
|
1511 aShutterSpeedValue2 ); |
|
1512 } |
|
1513 |
|
1514 // ----------------------------------------------------------------------------- |
|
1515 // CExifReadImpl::GetBrightnessSpeedValue |
|
1516 // Gets the Brightness Value tag data. |
|
1517 // ----------------------------------------------------------------------------- |
|
1518 // |
|
1519 TInt CExifReadImpl::GetBrightnessValue( |
|
1520 TInt32& aBrightnessValue1, |
|
1521 TInt32& aBrightnessValue2 ) const |
|
1522 { |
|
1523 if ( !iExifCore ) |
|
1524 { |
|
1525 return KErrGeneral; |
|
1526 } |
|
1527 |
|
1528 return iExifCore->GetTagData( KIdBrightnessValue, aBrightnessValue1, |
|
1529 aBrightnessValue2 ); |
|
1530 } |
|
1531 |
|
1532 // ----------------------------------------------------------------------------- |
|
1533 // CExifReadImpl::GetCustomRendered |
|
1534 // Gets the Custom Rendered tag data. |
|
1535 // ----------------------------------------------------------------------------- |
|
1536 // |
|
1537 TInt CExifReadImpl::GetCustomRendered( TUint16& aCustomRendered ) const |
|
1538 { |
|
1539 if ( !iExifCore ) |
|
1540 { |
|
1541 return KErrGeneral; |
|
1542 } |
|
1543 |
|
1544 return iExifCore->GetTagData( KIdCustomRendered, aCustomRendered ); |
|
1545 } |
|
1546 |
|
1547 // ----------------------------------------------------------------------------- |
|
1548 // CExifReadImpl::GetGainControl |
|
1549 // Gets the Gain Control tag data. |
|
1550 // ----------------------------------------------------------------------------- |
|
1551 // |
|
1552 TInt CExifReadImpl::GetGainControl( TUint16& aGainControl ) const |
|
1553 { |
|
1554 if ( !iExifCore ) |
|
1555 { |
|
1556 return KErrGeneral; |
|
1557 } |
|
1558 |
|
1559 return iExifCore->GetTagData( KIdGainControl, aGainControl ); |
|
1560 } |
|
1561 |
|
1562 // ----------------------------------------------------------------------------- |
|
1563 // CExifReadImpl::GetGpsVersion |
|
1564 // Gets the Gps Version tag data. |
|
1565 // ----------------------------------------------------------------------------- |
|
1566 // |
|
1567 TInt CExifReadImpl::GetGpsVersion( TUint32& aGpsVersion ) const |
|
1568 { |
|
1569 if ( !iExifCore ) |
|
1570 { |
|
1571 return KErrGeneral; |
|
1572 } |
|
1573 |
|
1574 return iExifCore->GetTagData( KIdGpsVersion, aGpsVersion ); |
|
1575 } |
|
1576 |
|
1577 // ----------------------------------------------------------------------------- |
|
1578 // CExifReadImpl::ParseJpegDataL |
|
1579 // Parses the Jpeg primary image data and initializes the Jpeg primary image |
|
1580 // structures. |
|
1581 // ----------------------------------------------------------------------------- |
|
1582 // |
|
1583 void CExifReadImpl::ParseJpegDataL( const TDesC8& aJpegData ) |
|
1584 { |
|
1585 if ( !iReader ) |
|
1586 { |
|
1587 iReader = CExifEndianBase::NewBaseL( aJpegData.Ptr(), aJpegData.Length(), |
|
1588 EFalse ); |
|
1589 } |
|
1590 ParseJpegDataL(); |
|
1591 delete iReader; |
|
1592 iReader = NULL; |
|
1593 } |